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Area light source device and liquid crystal display device including the same

A surface light source and light source technology, which is applied in the direction of plane/plate light guide, light guide, optics, etc., can solve the problems of narrow viewing angle range of high-brightness images, light cannot be fully enhanced, etc., and achieve the effect of wide viewing angle

Inactive Publication Date: 2008-07-09
JAPAN DISPLAY CENTRAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, rays in a view direction different from the normal direction cannot be enhanced sufficiently
In other words, the range of viewing angles that allow high-brightness images to be displayed is narrow

Method used

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  • Area light source device and liquid crystal display device including the same
  • Area light source device and liquid crystal display device including the same
  • Area light source device and liquid crystal display device including the same

Examples

Experimental program
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Effect test

Embodiment Construction

[0025] A surface light source device and a liquid crystal display device including the surface light source device according to an embodiment of the present invention will now be described with reference to the accompanying drawings. In particular, a description is given about a transmissive liquid crystal display device which selectively passes backlight from a surface light source device such as a backlight unit and displays images.

[0026] Such as figure 1 As shown in , a liquid crystal display device 1 includes a substantially rectangular, planar transmissive liquid crystal display panel 2, and a backlight unit 15 for illuminating the liquid crystal display panel 2. The liquid crystal display panel 2 is arranged such that a liquid crystal layer is sandwiched between a counter substrate. Specifically, the liquid crystal display panel 2 includes a rectangular array substrate 3, a rectangular counter substrate 4, and a liquid crystal layer 5, which serves as an optical modu...

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Abstract

An area light source device includes a light source, a light guide having an incidence surface on which radiation light from the light source is incident, and a first major surface and a second major surface, which are opposed to each other and from which incident light coming in through the incidence surface is emitted, a reflective layer disposed on the second major surface side of the light guide, a diffusion layer that is disposed on the first major surface side of the light guide and is constructed by stacking a plurality of diffusion sheets, and a lens layer that is disposed on the diffusion layer.

Description

technical field [0001] The present invention mainly relates to a surface light source device and a liquid crystal display device containing the surface light source device, in particular to a surface light source device for illuminating a liquid crystal display panel, and a liquid crystal display device containing the surface light source device. Background technique [0002] Liquid crystal display devices have been applied as display devices in various fields, such as display devices for OA equipment for computers and televisions, which take advantage of light weight, small thickness, and low power consumption. In recent years, liquid crystal display devices are also used as display devices for mobile terminals such as mobile phones. Such a liquid crystal display device includes, for example, a transmissive liquid crystal display panel and a liquid crystal backlight device that illuminates the backside of the liquid crystal display panel. [0003] With a liquid crystal dis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/133G02F1/1335
CPCG02B6/005G02B6/0056G02F2001/133607G02F1/133607G02F1/1335
Inventor 山本纯也西景子
Owner JAPAN DISPLAY CENTRAL CO LTD
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